.container {
  width: 1050px;
  margin: auto;
}

a {
  text-decoration: none;
}

.margin {
  margin-top: 30px;
}

.padding {
  padding: 1.5%;
}

.flex {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.nav-list {
  width: 100%;
  height: 30px;
  margin-top: 10px;
}

.nav-list .container ul {
  height: 30px;
  border-top: 1px solid #e6e6e6;
  border-bottom: 1px solid #e6e6e6;
}

.nav-list .container ul li {
  line-height: 30px;
  float: left;
  margin-right: 40px;
}

.nav-list .container ul li a {
  color: black;
}

.item {
  display: inline-block;
  width: 250px;
  height: 300px;
  box-sizing: border-box;
  margin-bottom: 10px;
  cursor: pointer;
  border: 1px solid rgba(0, 0, 0, 0.1);
}
.item .img {
  display: inline-block;
  width: 216px;
  height: 160px;
  overflow: hidden;
  margin-bottom: 10px;
}
.item .img img {
  width: 100%;
  height: 160px;
  transition: 0.35s;
}
.item h3 {
  margin-bottom: 8px;
  font-size: 20px;
  color: red;
}
.item p {
  font-size: 12px;
  margin: 5px 0;
  color: black;
}
.item p span {
  color: #646fb0;
}
.item .js:hover{
  color:red
}

.item .img img:hover{
  transform: scale(1.2);
}

.but {
  width: 100%;
}
.but .buts {
  width: 400px;
  margin: auto;
}
.but .buts button {
  width: 50px;
  height: 50px;
  font-size: 16px;
  background-color: #36a9ce;
  border: none;
  box-shadow: 10px 10px 5px rgba(0, 0, 0, 0.1);
  color: white;
}
.but .buts .next {
  width: 100px;
  color: black;
  border: 2px solid #81d3f8;
}

.but .buts *:nth-child(2n) {
  background-color: #81d3f8;
}

.next {
  background: none !important;
}